Surface grating loaded VCSEL with single mode power of over 80 mW

IEICE Electronics Express

article

Shanting Hu¹  Ahmed Hassan³  Xiaodong Gu²  Masanori Nakahama²  Fumio Koyama² 

[1] Beijing University of Posts and Telecommunications;Laboratory for Future Interdisciplinary Research of Science and Technology, Tokyo Institute of Technology;Department of Physics, Faculty of Science, Al-Azhar University;Ambition Photonics Inc.

关键词: VCSELs ,slow light ,high power ,single mode operation;   

DOI  :  10.1587/elex.18.20210202

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

We demonstrate a surface grating loaded VCSEL showing high power, good beam quality and stable single mode operation. In the structure, a single slow light mode propagating laterally along the long cavity of an oxide VCSEL can be selected thanks to the surface Bragg-grating. Experimental results of spectrum, L/I characteristics and beam quality with different device lengths are presented. A single mode power of over 80mW is realized with a narrow diffraction-limited divergence angle of 0.15° for a VCSEL with an oxide aperture of 4μm × 500μm under CW operation. A higher single mode power is expected through extending the device length with the proven scaling law.

【 授权许可】

CC BY